minix/sys/arch/i386/stand/lib/bootinfo_memmap.c

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/* $NetBSD: bootinfo_memmap.c,v 1.5 2008/12/14 17:03:43 christos Exp $ */
/*
* Copyright (c) 1999
* Matthias Drochner. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <lib/libsa/stand.h>
#include "libi386.h"
#include "bootinfo.h"
extern int getmementry(int *, int *);
void
bi_getmemmap(void)
{
int buf[5], i, nranges, n;
struct btinfo_memmap *bimm;
nranges = 0;
i = 0;
do {
if (getmementry(&i, buf))
break;
nranges++;
} while (i);
bimm = alloc(sizeof(struct btinfo_memmap)
+ (nranges - 1) * sizeof(struct bi_memmap_entry));
i = 0;
for (n = 0; n < nranges; n++) {
getmementry(&i, buf);
memcpy(&bimm->entry[n], buf, sizeof(struct bi_memmap_entry));
}
bimm->num = nranges;
BI_ADD(bimm, BTINFO_MEMMAP, sizeof(struct btinfo_memmap)
+ (nranges - 1) * sizeof(struct bi_memmap_entry));
}